COSG
| Acronym | Definition |
|---|---|
| COSG | Cuba Organic Support Group (est. 1997; UK) |
| COSG | Council of State Governments |
| COSG | Coming Out Support Group (University at Buffalo; Buffalo, NY) |
| COSG | Committee on Seismology and Geodynamics |
| COSG | Contingency Operations Support Group (USAF) |
| COSG | Cambridge Occupational Safety Group (UK) |